How Much?

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  • Created by: emmabesi
  • Created on: 31-12-14 11:04

Masses of atoms & metals-->

  • Relative atomic mass (Ar) is the mass of an atom compared to 1 atom of carbon12.

It's the bigger number on the periodic table

  • Relative formula mass (Mr) is the sum of all Ars in a formula (compoud)         Eg- Mr for CO = 12+16 = 28.
  • The Mr/Ar of a substance in grams is called one mole of that substance…

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